PRK: laser surface correction
PRK corrects vision with a laser directly on the surface of the cornea, without creating a flap. It is a well-established technique, often favored for thin corneas or certain higher-risk profiles.
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What does PRK involve?
The surgeon gently removes the epithelium (the thin surface layer of the cornea), then an excimer laser reshapes the surface to correct the visual defect. The epithelium regenerates spontaneously within a few days, protected by a bandage contact lens.
Which visual defects can be corrected?
PRK corrects myopia, astigmatism, and hyperopia, within the limits determined by the pre-operative assessment.
Who is PRK a good option for?
Because it does not create a flap, it is often preferred in cases of thin cornea, a somewhat higher-risk biomechanical profile, or a lifestyle exposed to impact (contact sports, certain professions). The absence of a flap eliminates the very rare risk of flap-related complications.
Recovery and follow-up
Recovery is slower than after LASIK: the first few days can be uncomfortable (a gritty sensation, tearing, light sensitivity) while the epithelium heals. Vision becomes clear within one to two weeks, then continues to refine.
Frequently asked questions
PRK or LASIK: what is the difference?
LASIK creates a flap and offers very fast recovery; PRK corrects the surface, without a flap, with a more gradual recovery. The choice depends on your cornea and your lifestyle.
Is PRK painful?
The procedure itself is painless. However, the first 2 to 4 days of healing can be uncomfortable; eye drops and a bandage contact lens help relieve this phase.
When can you return to work?
Often after a few days, but vision takes a little longer to become perfectly sharp than after LASIK. Timelines are discussed based on your specific activity.
Before you decide
All questions →Is PRK right for you?
The pre-operative assessment helps determine the best option between PRK, LASIK, and SMILE.
Book an appointmentThis page is for general information only and does not replace a medical consultation. The indication and technique are always individualized after a complete assessment. Pr Eric E. Gabison — cornea and refractive surgery, Fondation Adolphe de Rothschild, Paris.